ST. CHARLES, MO · St. Charles County
TIMBERCREST SUBD Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of June 1, 1997. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in St. Charles County, MO.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Missouri’s official records. Always confirm current status with Missouri before making decisions based on this information.
System facts
- System ID (PWSID)
- MO6036024
- System type
- Community Water System
- Population served
- 36
- Service connections
- 16
- Ownership
- privately owned
- Water source
- groundwater (wells)
TIMBERCREST SUBD is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, formerly serving 36 people from groundwater.
EPA's federal records list this system as inactive in 1997; the record below is historical.
As of August 1, 2026, its federal record holds 7 entries between 1980 and 1996, all of which EPA lists as closed. Nothing has been added since 1996.
Of the 7, 6 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals, the Radionuclides and Revised Rad Rule, and the Total Coliform Rules.
Violation history
Monitoring, Routine Major (TCR)
—Coliform (TCR)
August 1, 1996 – August 31, 1996
ArchivedMonitoring, Regular
—Mercury
January 1, 1994 – December 31, 1994
ArchivedMonitoring, Regular
—Nitrate-Nitrite
January 1, 1994 – December 31, 1994
ArchivedMonitoring, Regular
—Chromium
January 1, 1994 – December 31, 1994
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedFluoride
May 18, 1983 – October 17, 1983
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
June 24, 1980 – September 23, 1983
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
June 24, 1980 – September 23, 1982
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| August 1, 1996 – August 31, 1996 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| January 1, 1994 – December 31, 1994 | Monitoring, Regular | Mercury | — | Archived |
| January 1, 1994 – December 31, 1994 | Monitoring, Regular | Nitrate-Nitrite | — | Archived |
| January 1, 1994 – December 31, 1994 | Monitoring, Regular | Chromium | — | Archived |
| May 18, 1983 – October 17, 1983 | Maximum Contaminant Level Violation, Single Sample | Fluoride | Health-based | Archived |
| June 24, 1980 – September 23, 1983 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| June 24, 1980 – September 23, 1982 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Last known contact on file (system is inactive)
Not on record
314-928-4602
ST. CHARLES, MO 63303